1321131311000 has 64 divisors (see below), whose sum is σ = 3099736205280. Its totient is φ = 527035612800.

The previous prime is 1321131310997. The next prime is 1321131311029. The reversal of 1321131311000 is 1131311231.

It is a self number, because there is not a number n which added to its sum of digits gives 1321131311000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1397954 + ... + 2143953.

Almost surely, 2^{1321131311000} is an apocalyptic number.

1321131311000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321131311000 is an abundant number, since it is smaller than the sum of its proper divisors (1778604894280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321131311000 is a wasteful number, since it uses less digits than its factorization.

1321131311000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3542301 (or 3542287 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 1321131311000 its reverse (1131311231), we get a palindrome (1322262622231).

The spelling of 1321131311000 in words is "one trillion, three hundred twenty-one billion, one hundred thirty-one million, three hundred eleven thousand".